In Bravo’s latest offshoot from their “Real Housewives” franchise, “Luann & Sonja: Welcome to Crappie Lake,” “RHONY” alums Luann de Lesseps and Sonja Morgan package themselves as modernizations of Laverne & Shirley or Thelma and Louise in adventurous “fish out of water” scenarios that find them a-wrasslin’ and a-catchin’ catfish with their bare hands in a lake in Benton, Illinois called “Crappie Lake” — referring as much to the type of fish found within (pronounced Craw-pee) as to the odorific sewage plant nearby. But, to my recollection, neither of the buddy duos mentioned above are known for blasting out farts in public or aggressively propositioning local municipal workers as Luann and Sonja are. Not like there’s anything wrong with doing that. Or not doing that for that matter. These are just points of distinction that money, so it seems, really cannot buy you class, but classlessness does make for great reality television. Ask the cast of “Vanderpump Rules” about their new Emmy nominations to prove this point. To give some background on the “Crappie Lake” stars, Luann is a 58-year-old former …